/* ═══════════════════════════════════════════════════════════════════════════
   Obsidian Design System
   Enterprise AI Playbook — sunilprakash.com/enterprise-ai
   ═══════════════════════════════════════════════════════════════════════════ */


/* ─── 0. Custom Properties ────────────────────────────────────────────────── */

:root {
  --bg: #0a0a0a;
  --surface: #141210;
  --gold: #c8b48c;
  --gold-light: #e8d8b8;
  --gold-deep: #a09070;
  --text: #a09888;
  --heading: #f0ece4;
  --label: #6b6560;
  --focus-bg: #1a1816;
  --focus-text: #b8b0a0;
  --content-width: 760px;
  --content-wide: 900px;
  --base-path: '/enterprise-ai';
  --font-heading: 'Fraunces', serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Mermaid theming */
  --mermaid-bg: transparent;
  --mermaid-node-bg: rgba(200, 180, 140, 0.06);
  --mermaid-node-border: rgba(200, 180, 140, 0.2);
  --mermaid-text: #a09888;
  --mermaid-edge: rgba(200, 180, 140, 0.3);
  --mermaid-label: #a09888;
}


/* ─── 1. Font Loading ─────────────────────────────────────────────────────── */

/* Fraunces Variable (optical-size + weight axes) */
@font-face {
  font-family: 'Fraunces';
  src: url('/enterprise-ai/fonts/Fraunces-Variable.woff2') format('woff2');
  font-weight: 300 600;
  font-style: normal;
  font-display: swap;
  font-optical-sizing: auto;
}

/* IBM Plex Sans — 300 Light */
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('/enterprise-ai/fonts/IBMPlexSans-Light.woff2') format('woff2');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

/* IBM Plex Sans — 400 Regular */
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('/enterprise-ai/fonts/IBMPlexSans-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* IBM Plex Sans — 500 Medium */
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('/enterprise-ai/fonts/IBMPlexSans-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* IBM Plex Sans — 600 SemiBold */
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('/enterprise-ai/fonts/IBMPlexSans-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* IBM Plex Mono — 400 Regular */
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('/enterprise-ai/fonts/IBMPlexMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* IBM Plex Mono — 500 Medium */
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('/enterprise-ai/fonts/IBMPlexMono-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}


/* ─── 2. Reset + Base ─────────────────────────────────────────────────────── */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 300;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection {
  background: var(--gold);
  color: var(--bg);
}

::-moz-selection {
  background: var(--gold);
  color: var(--bg);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input {
  font: inherit;
  border: none;
  outline: none;
}


/* ─── 3. Typography ───────────────────────────────────────────────────────── */

h1 {
  font-family: var(--font-heading);
  font-size: 2.2em;
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--heading);
  margin-bottom: 24px;
}

h2 {
  font-family: var(--font-heading);
  font-size: 1.5em;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--heading);
  margin-top: 56px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(200, 180, 140, 0.12);
}

h3 {
  font-family: var(--font-body);
  font-size: 1.1em;
  font-weight: 600;
  line-height: 1.35;
  color: var(--heading);
  margin-top: 40px;
  margin-bottom: 16px;
}

h4 {
  font-family: var(--font-body);
  font-size: 0.95em;
  font-weight: 600;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--label);
  margin-top: 32px;
  margin-bottom: 12px;
}

p {
  margin-bottom: 20px;
}

strong {
  font-weight: 600;
  color: var(--heading);
}

em {
  font-style: italic;
}

a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 180, 140, 0.4);
  transition: border-color 0.2s ease, color 0.2s ease;
}

a:hover {
  color: var(--gold-light);
  border-color: var(--gold);
}

ul,
ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

ul li {
  list-style: none;
  position: relative;
  padding-left: 8px;
  margin-bottom: 8px;
}

ul li::before {
  content: '';
  position: absolute;
  left: -16px;
  top: 0.7em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.6;
}

ol li {
  margin-bottom: 8px;
}

ol li::marker {
  color: var(--gold);
  font-weight: 500;
}

hr {
  border: none;
  height: 1px;
  background: rgba(200, 180, 140, 0.08);
  margin: 48px 0;
}


/* ─── 4. Layout ───────────────────────────────────────────────────────────── */

.reading-content,
.showcase-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 32px;
}

.content-wide {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 32px;
}


/* ─── 5. Skip Link ────────────────────────────────────────────────────────── */

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 300;
  padding: 8px 16px;
  background: var(--gold);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  border-radius: 4px;
  text-decoration: none;
  border: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 8px;
}


/* ─── 6. Navigation — Top Bar ─────────────────────────────────────────────── */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 100;
  background: rgba(10, 10, 10, 0.9);
  border-bottom: 1px solid rgba(200, 180, 140, 0.06);
}

@supports (backdrop-filter: blur(16px)) {
  .topbar {
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }
}

.logo {
  font-family: var(--font-heading);
  font-size: 14px;
  color: var(--gold);
  text-decoration: none;
  border-bottom: none;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  width: 20px;
  height: 20px;
  opacity: 0.9;
}

.logo:hover {
  border-bottom: none;
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 16px;
}

.breadcrumb-section {
  color: var(--label);
}

.breadcrumb-page {
  color: var(--text);
}

.separator {
  color: rgba(107, 101, 96, 0.4);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.nav-site-link {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--label);
  border-bottom: none;
  opacity: 0.6;
  transition: opacity 0.2s ease, color 0.2s ease;
  margin-right: 4px;
}

.nav-site-link:hover {
  opacity: 1;
  color: var(--gold);
  border-bottom: none;
}

.cmd-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(200, 180, 140, 0.15);
  border-radius: 4px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--label);
  background: transparent;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.cmd-trigger:hover {
  border-color: var(--gold);
  color: var(--text);
}

.cmd-trigger kbd {
  display: inline-block;
  border: 1px solid rgba(200, 180, 140, 0.1);
  border-radius: 2px;
  padding: 1px 4px;
  font-size: 9px;
  color: rgba(107, 101, 96, 0.6);
}

.focus-toggle,
.share-trigger {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(200, 180, 140, 0.15);
  background: transparent;
  color: var(--label);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
  position: relative;
}

.focus-toggle:hover,
.share-trigger:hover {
  border-color: var(--gold);
  color: var(--gold);
}


/* ─── 7. Progress Bar ─────────────────────────────────────────────────────── */

.progress-bar {
  position: fixed;
  top: 48px;
  left: 0;
  right: 0;
  width: 100%;
  height: 1px;
  background: rgba(200, 180, 140, 0.06);
  z-index: 99;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold), var(--gold-light));
  transition: width 0.3s ease-out;
}


/* ─── 8. Bottom Section Pills ─────────────────────────────────────────────── */

.section-pills {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 8px 16px;
  z-index: 100;
  background: rgba(10, 10, 10, 0.95);
  border-top: 1px solid rgba(200, 180, 140, 0.06);
  transition: transform 0.3s ease;
}

@supports (backdrop-filter: blur(16px)) {
  .section-pills {
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }
}

.pills-hidden {
  transform: translateY(100%);
}

.sec-pill {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--label);
  padding: 5px 12px;
  border-radius: 20px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}

.sec-pill:hover {
  color: var(--text);
  border-bottom: none;
}

.sec-pill.active {
  color: var(--gold);
  border-color: var(--gold);
  background: rgba(200, 180, 140, 0.06);
}


/* ─── 9. Command Palette ──────────────────────────────────────────────────── */

.cmd-palette {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10, 10, 10, 0.95);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 20vh;
}

@supports (backdrop-filter: blur(20px)) {
  .cmd-palette {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }
}

.cmd-palette.open {
  display: flex;
}

.cmd-search-box {
  max-width: 600px;
  width: 100%;
  padding: 0 24px;
}

.cmd-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--gold);
  color: var(--heading);
  font-family: var(--font-mono);
  font-size: 16px;
  padding: 16px 0;
  caret-color: var(--gold);
}

.cmd-input::placeholder {
  color: var(--label);
}

.cmd-results {
  max-height: 60vh;
  overflow-y: auto;
  margin-top: 16px;
}

.cmd-results::-webkit-scrollbar {
  width: 4px;
}

.cmd-results::-webkit-scrollbar-track {
  background: transparent;
}

.cmd-results::-webkit-scrollbar-thumb {
  background: rgba(200, 180, 140, 0.15);
  border-radius: 2px;
}

.cmd-section-header {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gold);
  padding: 12px 16px 6px;
  opacity: 0.7;
}

.cmd-result {
  padding: 10px 16px;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  border-left: 2px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.cmd-result:hover,
.cmd-result.selected {
  background: rgba(200, 180, 140, 0.04);
  border-left-color: var(--gold);
}

.cmd-result-title {
  color: var(--heading);
  font-weight: 400;
}

.cmd-result-section {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--label);
  margin-left: 8px;
}


/* ─── 10. Page Header ─────────────────────────────────────────────────────── */

.page-header {
  padding: 120px 0 60px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gold);
  opacity: 0.8;
  margin-bottom: 24px;
  display: block;
}


/* ─── 11. Content Elements ────────────────────────────────────────────────── */

/* Insight Box */
.insight-box {
  position: relative;
  border-left: 2px solid rgba(200, 180, 140, 0.4);
  padding: 20px 24px;
  margin: 32px 0;
  background: rgba(200, 180, 140, 0.03);
  animation: glow-pulse 4s ease-in-out infinite;
}

.insight-box p {
  color: var(--gold);
  font-size: 15px;
  font-style: italic;
  font-weight: 400;
  margin-bottom: 0;
}

.insight-box p:not(:last-child) {
  margin-bottom: 12px;
}

@keyframes glow-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(200, 180, 140, 0);
  }
  50% {
    box-shadow: 0 0 30px 0 rgba(200, 180, 140, 0.08);
  }
}

/* Tradeoff Panel */
.tradeoff-panel {
  border: 1px solid rgba(200, 180, 140, 0.1);
  border-radius: 4px;
  padding: 24px;
  margin: 32px 0;
  background: rgba(200, 180, 140, 0.02);
}

.tradeoff-content h3 {
  margin-top: 0;
}

/* Warning Box */
.warning-box {
  border-left: 2px solid rgba(200, 160, 100, 0.5);
  padding: 16px 24px;
  margin: 32px 0;
  background: rgba(200, 160, 100, 0.03);
}

.warning-box p:last-child {
  margin-bottom: 0;
}

/* Note Box */
.note-box {
  border-left: 2px solid rgba(200, 180, 140, 0.2);
  padding: 16px 24px;
  margin: 32px 0;
  background: rgba(200, 180, 140, 0.02);
}

.note-box p:last-child {
  margin-bottom: 0;
}

/* Tables */
.obsidian-table-wrap {
  overflow-x: auto;
  margin: 32px 0;
  -webkit-overflow-scrolling: touch;
}

.obsidian-table {
  width: 100%;
  border-collapse: collapse;
}

.obsidian-table th {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gold);
  background: rgba(200, 180, 140, 0.04);
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(200, 180, 140, 0.12);
  white-space: nowrap;
}

.obsidian-table td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(200, 180, 140, 0.06);
  font-size: 14px;
}

.obsidian-table tr:hover td {
  background: rgba(200, 180, 140, 0.02);
}

/* Blockquotes */
.obsidian-quote.gold-border {
  border-left: 3px solid var(--gold);
  padding: 16px 24px;
  margin: 32px 0;
  font-style: italic;
  color: var(--focus-text);
}

.obsidian-quote.gold-border p {
  margin-bottom: 0;
}

.obsidian-quote.gold-border p:not(:last-child) {
  margin-bottom: 12px;
}

/* Code Blocks */
pre code {
  display: block;
  background: var(--surface);
  border: 1px solid rgba(200, 180, 140, 0.08);
  border-radius: 6px;
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

pre {
  margin: 24px 0;
}

/* Inline Code */
code {
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* Prevent double-styling for code inside pre */
pre code {
  padding: 20px 24px;
}


/* ─── 12. Mermaid ─────────────────────────────────────────────────────────── */

pre.mermaid {
  background: transparent;
  border: none;
  padding: 0;
  margin: 32px 0;
  text-align: center;
}

.mermaid svg {
  max-width: 100%;
}

.mermaid .node rect,
.mermaid .node circle,
.mermaid .node polygon {
  fill: var(--mermaid-node-bg);
  stroke: var(--mermaid-node-border);
}

.mermaid .nodeLabel {
  color: var(--mermaid-text);
  fill: var(--mermaid-text);
}

.mermaid .edgePath path {
  stroke: var(--mermaid-edge);
}

.mermaid .edgeLabel {
  color: var(--mermaid-label);
  background: var(--bg);
}


/* ─── 13. Shimmer Text ────────────────────────────────────────────────────── */

.shimmer-text {
  background: linear-gradient(
    90deg,
    var(--gold) 0%,
    var(--gold-light) 40%,
    var(--gold) 80%
  );
  background-size: 200% auto;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 4s linear infinite;
}

@keyframes shimmer {
  0% {
    background-position: 200% center;
  }
  100% {
    background-position: -200% center;
  }
}


/* ─── 14. Ribbon Divider ──────────────────────────────────────────────────── */

.ribbon-divider {
  position: relative;
  height: 120px;
  overflow: hidden;
  margin: 48px 0;
}

.ribbon-divider svg {
  position: absolute;
  width: 100%;
  height: 100%;
}


/* ─── 15. Scroll Reveal ───────────────────────────────────────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.reveal:nth-child(1) { transition-delay: 0ms; }
.reveal:nth-child(2) { transition-delay: 80ms; }
.reveal:nth-child(3) { transition-delay: 160ms; }
.reveal:nth-child(4) { transition-delay: 240ms; }
.reveal:nth-child(5) { transition-delay: 320ms; }
.reveal:nth-child(6) { transition-delay: 400ms; }
.reveal:nth-child(7) { transition-delay: 480ms; }
.reveal:nth-child(8) { transition-delay: 560ms; }
.reveal:nth-child(9) { transition-delay: 640ms; }
.reveal:nth-child(10) { transition-delay: 720ms; }


/* ─── 16. Progress Ring ───────────────────────────────────────────────────── */

.progress-ring {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 50;
  width: 24px;
  height: 24px;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.progress-ring:hover {
  transform: scale(1.3);
}

.progress-ring svg {
  width: 24px;
  height: 24px;
}

.progress-ring-circle {
  fill: none;
  stroke: var(--gold);
  stroke-width: 2;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.3s ease;
}

.progress-ring-bg {
  fill: none;
  stroke: rgba(200, 180, 140, 0.1);
  stroke-width: 2;
}

.progress-ring-tooltip {
  position: absolute;
  left: 32px;
  bottom: 0;
  background: var(--surface);
  border: 1px solid rgba(200, 180, 140, 0.15);
  border-radius: 4px;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gold);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.progress-ring:hover .progress-ring-tooltip {
  opacity: 1;
}


/* ─── 17. Interactive Mount ───────────────────────────────────────────────── */

.interactive-mount {
  min-height: 200px;
  position: relative;
  margin: 40px 0;
}


/* ─── 18. Page Footer ─────────────────────────────────────────────────────── */

.page-footer {
  max-width: var(--content-width);
  margin: 32px auto 40px;
  padding: 0 32px;
}

.next-suggestion {
  border-top: 1px solid rgba(200, 180, 140, 0.08);
  padding-top: 24px;
}

.next-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
  opacity: 0.7;
}

.next-suggestion a.next-link {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1.2em;
  color: var(--gold);
  text-transform: none;
  letter-spacing: -0.01em;
  border-bottom: 1px solid rgba(200, 180, 140, 0.25);
  padding-bottom: 2px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.next-suggestion a.next-link:hover {
  color: var(--gold-light);
  border-color: var(--gold);
}

.footer-author {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(200, 180, 140, 0.06);
}

.footer-line {
  font-size: 13px;
  color: var(--text);
  margin-bottom: 10px;
}

.footer-line a {
  color: var(--gold);
  border-bottom: 1px solid rgba(200, 180, 140, 0.3);
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--label);
  border-bottom: none;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--gold);
}

.copyright,
.page-copyright {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--label);
  margin-top: 24px;
  opacity: 0.4;
}


/* ─── 19. Share Dropdown ──────────────────────────────────────────────────── */

.share-dropdown {
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 8px;
  background: var(--surface);
  border: 1px solid rgba(200, 180, 140, 0.15);
  border-radius: 4px;
  padding: 8px 0;
  min-width: 160px;
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.share-dropdown.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.share-option {
  display: block;
  width: 100%;
  padding: 8px 16px;
  font-size: 12px;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease;
  border: none;
  background: none;
}

.share-option:hover {
  background: rgba(200, 180, 140, 0.04);
}

.share-copied {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 8px 16px;
  animation: fade-out 1.5s ease-in-out forwards;
}

@keyframes fade-out {
  0%, 70% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}


/* ─── 19b. Signature Visual Blocks ────────────────────────────────────────── */

/* Flagship page heading scale */
body.flagship .showcase-content h1,
body.flagship .reading-content h1 {
  font-size: 2.5em;
  font-weight: 300;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

body.flagship .showcase-content h2,
body.flagship .reading-content h2 {
  font-size: 1.6em;
  margin-top: 64px;
}

/* Alternate panel background (surface sections) */
.surface-panel {
  background: #141210;
  border-top: 1px solid rgba(200, 180, 140, 0.06);
  border-bottom: 1px solid rgba(200, 180, 140, 0.06);
  padding: 64px 0;
  margin: 64px calc(-50vw + 50%);
  padding-left: calc(50vw - 50%);
  padding-right: calc(50vw - 50%);
}

.surface-panel .panel-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* Board-style metric strip */
.metric-strip {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 40px 0;
  border-top: 1px solid rgba(200, 180, 140, 0.08);
  border-bottom: 1px solid rgba(200, 180, 140, 0.08);
  margin: 48px 0;
  flex-wrap: wrap;
}

.metric-strip .metric {
  text-align: center;
  min-width: 100px;
}

.metric-strip .metric-value {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 400;
  color: var(--gold);
  letter-spacing: -0.02em;
  line-height: 1;
}

.metric-strip .metric-label {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--label);
  margin-top: 8px;
}

.metric-strip .metric-source {
  font-family: var(--font-mono);
  font-size: 8px;
  color: rgba(107, 101, 96, 0.5);
  margin-top: 4px;
}

/* Decision matrix card */
.decision-card {
  background: rgba(200, 180, 140, 0.02);
  border: 1px solid rgba(200, 180, 140, 0.12);
  border-radius: 4px;
  padding: 32px;
  margin: 40px 0;
  position: relative;
}

.decision-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  border-radius: 4px 4px 0 0;
  opacity: 0.4;
}

.decision-card .card-label {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gold);
  margin-bottom: 16px;
  opacity: 0.7;
}

.decision-card .card-title {
  font-family: var(--font-heading);
  font-size: 1.3em;
  color: var(--heading);
  margin-bottom: 12px;
}

/* Board document style */
.board-document {
  background: var(--surface);
  border: 1px solid rgba(200, 180, 140, 0.1);
  border-radius: 4px;
  margin: 48px 0;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(200, 180, 140, 0.04);
}

.board-document .doc-header {
  padding: 16px 24px;
  border-bottom: 1px solid rgba(200, 180, 140, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.board-document .doc-type {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gold);
  opacity: 0.6;
}

.board-document .doc-classification {
  font-family: var(--font-mono);
  font-size: 8px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--label);
  padding: 2px 8px;
  border: 1px solid rgba(200, 180, 140, 0.1);
  border-radius: 2px;
}

.board-document .doc-body {
  padding: 32px 40px;
}

/* When board-document wraps raw markdown (no doc-body wrapper) */
.board-document > h2,
.board-document > h3,
.board-document > p,
.board-document > .obsidian-table-wrap,
.board-document > ul,
.board-document > ol {
  padding-left: 40px;
  padding-right: 40px;
}

.board-document > h2:first-child,
.board-document > h2:first-of-type {
  padding-top: 32px;
}

.board-document > p:last-child {
  padding-bottom: 24px;
}

.board-document .doc-footer {
  padding: 12px 24px;
  border-top: 1px solid rgba(200, 180, 140, 0.06);
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--label);
  opacity: 0.5;
}

/* Executive quote / callout block */
.executive-callout {
  font-family: var(--font-heading);
  font-size: 1.4em;
  font-weight: 300;
  line-height: 1.5;
  color: var(--heading);
  padding: 48px 0;
  margin: 48px 0;
  border-top: 1px solid rgba(200, 180, 140, 0.1);
  border-bottom: 1px solid rgba(200, 180, 140, 0.1);
  text-align: center;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.executive-callout .callout-source {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--label);
  margin-top: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Section rhythm helpers */

/* Full-bleed gold rule between major sections */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(200, 180, 140, 0.15), transparent);
  margin: 80px 0;
  max-width: none;
}

/* Breathing space between dense sections */
.section-breath {
  padding: 32px 0;
}

/* Compact section (tighter spacing for metric strips, quick-reference) */
.section-compact {
  margin: 24px 0;
}
.section-compact h3 {
  margin-bottom: 12px;
}
.section-compact p {
  margin-bottom: 8px;
}

/* Reading path cards (homepage CIO / CEO / CAIO / CDO entry points) */
.path-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 40px 0;
}

.path-card {
  background: rgba(200, 180, 140, 0.02);
  border: 1px solid rgba(200, 180, 140, 0.1);
  border-radius: 4px;
  padding: 24px;
  text-decoration: none;
  transition: all 0.3s ease;
  display: block;
}

.path-card:hover {
  border-color: rgba(200, 180, 140, 0.25);
  background: rgba(200, 180, 140, 0.04);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.path-card .path-role {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gold);
  margin-bottom: 12px;
}

.path-card .path-desc {
  font-size: 13px;
  color: var(--text);
  line-height: 1.6;
}

.path-card:hover .path-role {
  color: var(--gold-light);
}


/* ─── 20. Focus Indicators ────────────────────────────────────────────────── */

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

:focus:not(:focus-visible) {
  outline: none;
}


/* ─── 21. Responsive Breakpoints ──────────────────────────────────────────── */

/* Large screens (default): content-width 760px, content-wide 900px */

@media (max-width: 1199px) {
  :root {
    --content-width: 700px;
    --content-wide: 800px;
  }
}

@media (max-width: 1023px) {
  :root {
    --content-width: calc(100% - 64px);
    --content-wide: calc(100% - 64px);
  }

  .section-pills {
    display: none;
  }
}

@media (max-width: 767px) {
  :root {
    --content-width: calc(100% - 48px);
    --content-wide: calc(100% - 48px);
  }

  body {
    font-size: 14px;
  }

  h1 {
    font-size: 1.7em;
  }

  h2 {
    font-size: 1.3em;
    margin-top: 40px;
  }

  .topbar {
    height: 44px;
    padding: 0 16px;
  }

  .progress-bar {
    top: 44px;
  }

  .page-header {
    padding: 100px 0 40px;
  }

  .breadcrumb {
    display: none;
  }

  .cmd-trigger span {
    display: none;
  }

  .reading-content,
  .showcase-content,
  .content-wide {
    padding: 0 20px;
  }

  .page-footer {
    padding: 0 20px;
  }

  .insight-box,
  .tradeoff-panel,
  .warning-box,
  .note-box {
    padding: 16px 20px;
  }

  .obsidian-table-wrap {
    margin-left: -20px;
    margin-right: -20px;
    padding: 0 20px;
  }

  .progress-ring {
    bottom: 16px;
    left: 16px;
  }
}


/* ─── 22. @supports backdrop-filter (mobile reduction) ────────────────────── */

@media (max-width: 767px) {
  @supports (backdrop-filter: blur(8px)) {
    .topbar {
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
    }

    .section-pills {
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
    }

    .cmd-palette {
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
    }
  }
}


/* ─── 23. Reduced Motion ──────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .shimmer-text {
    animation: none;
    background: none;
    -webkit-text-fill-color: var(--gold);
    color: var(--gold);
  }

  .insight-box {
    animation: none;
  }

  .path-card {
    transition: none;
    transform: none;
  }
}


/* ─── 24. Print ───────────────────────────────────────────────────────────── */

@media print {
  body {
    background: #fff;
    color: #000;
    font-size: 12pt;
    line-height: 1.5;
  }

  a {
    color: #000;
    text-decoration: underline;
    border-bottom: none;
  }

  h1, h2, h3, h4 {
    color: #000;
  }

  .topbar,
  .progress-bar,
  .section-pills,
  .progress-ring,
  .page-footer,
  .cmd-palette,
  .share-dropdown,
  canvas {
    display: none !important;
  }

  .reading-content,
  .showcase-content,
  .content-wide {
    max-width: 100%;
    padding: 0;
  }

  .page-header {
    padding: 0 0 20px;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .insight-box,
  .tradeoff-panel,
  .warning-box,
  .note-box {
    break-inside: avoid;
    border-color: #ccc;
    background: none;
  }

  pre code {
    border-color: #ccc;
    background: #f5f5f5;
  }
}